Leather stripping and trimming machine.



P. STEIN.

LEATHER STRIPPING AND TRIMMING MAGHINE.

APPLIGATION FILED JAN. 10, 1910.

Patented 1360.20, 1910.

3 BEETS-$112M 1.

y/jgl v aass e5 1 rm: NORRIS FETERiCO, WASHINGTQN, :7. c4

P. STEIN.

LEATHER STRIPPING AND TRIMMING MACHINE.

APPLICATION FILED JAN 10, 1910. 979,219, Patented Dec. 20, 1910.

3- SHEETS-SHEET 2.

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P. STEIN.

LEATHER STRIPPING AND TRIMMING momma.

APPLICATION FILED JAN.10, 1910. 979,21 9, Patented Dec.20, 1910.

3 SHEETB-SHEET 3.

THE NORRIS PETERS co" WASHINGTON, n c v PETER STEIN, OF CHICAGO, ILLINOIS.

LEATHER STRIPPING AND TRIMMING MACHINE.

Specification of Letters Patent. Application filed January 10, 1910.

Patented Dec. 20, 1910. Serial No. 537,291.

To all 10. mm it may concern."

Be it known that I, PETER STEIN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Leather Stripping and Trimming Machines, of which the following is a specification.

This invention relates to improvements in a machine to be used for cutting piecesof leather into strips of various sizes and for trimming the edges of strips of leather so as to give them the desired contour or shape, and while it is more especially intended for use in the manufacture of leather belts of the endless type. yet it is applicable for producing strips of leather, trimming the edges thereof, or shaving the strips to be used for other purposes, and it consists in certain peculiarities of the construction, novel arrangemei'it, and operation of the various parts thereof, as will be hereinafter more fully set forth and specifically claimed.

The principal object of the invention is to provide a leather stripping and trimming machine which shall be simple and ineXpensive in construction, strong, durable and etiicient in operation, and so made that the widths of the strips to be produced can be readily and accurately regulated and the edges of the strips trimmed by means of suitable tools to give them the desired form or shape.

Qinoihcr object of the invention is to provide a machine of the above-named general character. which shall be so constructed that strips of leather having their ends connected to form endless belts, may be passed through said machine and acted upon by means of the parts thereof to properly trim the ed es of the belts while they are in their endless form.

)Tumerous other objects and advantages of the invention will be disclosed in the subjoincd description and explanation.

in order to enable others skilled in the art to which my invention pertains, to make and use the same. i will now proceed to tie scribe it, referring to the accompanying drawings in which r- Figure l, is a front view in elevation of a machine embodying the invention. Fig. 2, is a plan view thereof; Fig. 3, is a crosssectional view taken on line 33 of Fi 1, looking in the direction indicated by the arrows; F ig'. l, a similar View taken on line I 4% of Fig. 1; Fig. 5, is a fragmental perspective View of the rear portion of the gage-bar; Fig. 6, is an end view thereof I showing the spring-pressed bearing-block for one of the feed rollers; Fig. 7, is a front view in elevation of the machine with the front pair of feed rollers omitted; Fig. 8, is a front view in elevation of a portion of the bed-plate of the machine showing the tolholders mounted thereon for forming leather into strips as well as for beveling the edges of said strips as they are formed; Fig. 9, is a side View of one of the tool holders; Fig. 10, is a face view thereof; Fig. 11, is-a similar view of the bracket members for the tool-holder; Fig. 12, is a side View of one of the said members; Fig. 13, is a face view of a modified form of the I tool holder and bracket therefor; and Fig.

14, is an end view of the same. I Like numerals of reference, refer to corresponding parts throughout the different i views of the drawings.

The reference numeral 20, designates the bed-plate of the machine which is mounted at each of its ends on an upright 21, and is provided near its rear portion with a longitudinally disposed slot 22, to receive the lower ends of set bolts 23, which are passed through suitable openings at about the middle of guides 21, which are transversally disposed on the upper surface of the bedplate, and are adjustably held thereon by means of the bolts 23, and wing-nuts 25, with which each of said bolts is provided on its upper end. As is clearly shown in Figs. 2, and 3, of the drawings, each of the guides 24, has on its inner edge an upwardly extended flange 26, each of which is cut away near its front end to permit of the movement of the presser-roller and gage-bar, as will be presently explained. The front end of each of the guides 24, is upturned as at 27, just in front of the gage-bar to form guides on each side of the piece of leather as it is forced forwardly through the cutters or tools, 28, which may have their cutting surfaces of any desired form to give the proper shape to the edges of the leather I! strips when the tools are being used for trimming the edges. In front of the slot 1 22, in the bed-plate 20, is another longitudinally disposed slot 29, which is for the purpose of permitting the upper portion of a roller 30, to protrude slightly therethrough l which roller is journaled at its ends on suit able extensions ill, the. bed-plate. The

plate is provided with a longitudinally disposed slot or way tor the reception and operation of the brackets which carry the tool. holders.

Vertically journaled near each end 01. the bed-plate and between the slots 29, and 32, thereot a screw-shttt 33. each of which has incnnted on its lower end a sprocket wheel ll. around which is extended a sproclwt chain 3 3. to cause the screw-shatts 23 1. to turn in unison. line of the sprocket wheels ll. may be provided with a crank handle 36, by means at which it is apparent that said sprocket wheels may be turned so as to transmit motion to the other procket wheel. as well as to the screw-shaft on which said wheels are mounted. illounted on each ot the screw ia' ts is a block 3?, in screw engagement therewith and each oit which has extended through a suitable opening ierein a vcrti *al. s andard 38, mounted on the upper surtace oi the bed-plate.-

1 f the blocks 37. is provided on its upper .lhllch with a transverse recess 39, to resur ace ceirc portions o;t' the gage-bar ell), which is pivotally secured at. one of its ends in one of said recesses. o is clearly shown in Fins. 1. and T. of the drawings, and has its other end reduced to tor" a handle ll, by means of which it may he raised. The block 37, at the handled end ot the gage bar 4-0, has pivotally secured on upper surtace one its end of a doe: 393. which may be provided at itsv other end with. a knob or handle 4-3, to be used tor turning the dog troin over the gage-bar, thus releasing the same and per nitting it to he turned on its pivot.

its is clearly shown in Figs. -3, ii. and G. oi the drawings. the gag e bar i0. is provided at its lower edge with a rearwardly extended horizontal tlange ll. and near each of its with a rwirwardlv extended bracket if). in each ot which is titted a bearing block ll}. which are 'll'CYdlltfll from falling out by means of set screws l7, pass-ed through openingg s in the rear portions of the brackets l3, and engaging with their inner ends grooves in said block so as to permit vertical movement the cot. lmcated on each o-t the beariirg bio 's it}. is a spring; 3. the tension of which is regulated bv neans ot a set screw t'l and a washer 50. the latter re ting on the upper portion of the spring l8. and the scrrw being seattd in the upper portion ot the bracket. ilournaled in the bearing blocks lb. a p!- cr roller the lower surface at which i b at tin-sh with the lower surtuce ot the llang'e ll, ann will rest on the. upper surfac of the leath r as it. passes between the n if is ll, on the bed-plate of the machine. lilovably secured at one of its ends b v rreans ot a set screw passing;

through a slot therein to the front end ends of one oi. the blocks 37. and preferably to that one at the. handled end of the gage-bar, is 2 bracket at, which has its lower portion secured by means of set screws 55, to the lront portion of the bed-plate 20, near one oil its ends. Vertically mounted on the. front. portion of the bed-plate 20. at a suitable point, but herein shown near its middle, is a bracket 56, which may be adiustilily secured on the bed-plate by means oit set screws 5?. and has in its uppe' portion a transverse opening or bearing for one end ot the draw-teed-rollers 55, the strait all, of which. 'j( urnaled at its other end in the bracket and has mounted on its outer end a gear (30. o mesh with a gear 61. on the outer end of the shaft (3:2, which is also journaled at one of its ends on the bracket Ti-l. and carries on its. other end a draw-teeth roller (33. located above the roller 58, and in parallelism therewithf dtfl'llCtlllf F mounted on the front portion ot the bedpate 20, between the brackets at. and F6, is another bracket til. through suitable openings in which the rollers 58, and o l. are extended. The opening, for the roller 3, in said bracket is vertically elongated (see Fig. 3) and has titted therein a spring-actuated block (35, which rests on the mile and may have its tension regulated by means ot a set-screw tlll, located in the upper portion ot the bracket.

That portion of the shaft (li which is iournaled in he bracket fat. is spring-ad justed by means of set-screw (3i, and a spring as. located in a suitable opening in the said bracket. the spring-adjustnients in the brackets 5-1- and (E l-. iror the roller (3?), and shaft. (32. are similar to that shown in Fig. 6, and above described. The shaft 62, is p 'ovided with collars til and it), the latter of which normally rests against one side ot the bracket 6i, while the collar (39, will.

rest against one side ot a dog: Tl. which is pivot ally secured on the inner F face of the bracket Til. by means ot a pivot T2, a id is adapted to engage the shat't (32. outwardly "from the collar no as clearly shown in l. '2. and +l-. ot' the drawings. ll r raising the dog T1, it is apparent that the shaft (32, may be drawn outward l' v by means of a crank-handle T3, thereon, nnti he collar (39.

l i strikes the inner sin i ce of he bracket, 5 d rt the oller till.

thus removing: the inner en r from over the rollers t permit the leather strip or endless belt leinr'; placel in position or removed.

Mounted on the front portion oi the bedplate are two brackets for the tool-holderi-i, which brackets are exactly alike with the ct ception that one oi the lllCLllflQlS of one ol the b 'ackets provided wi h a screw-threznled extension to engage. a screw-tlneaded rod used for adjusting the position of the bracket on the bed-plate with respect to the other bracket. Each of these brackets consists of two upright members H, having on their lower portions oppositely disposed recesses T5, to engage the sides of the slot- 32.

of the members M, has on its inner surface an arcuate groove T6, to receive a similarly shaped rib 77, on each side of the tool holder TS, which has a flat face provided at its upper end with an overhanging ledge 79, and at its lower end with a curved ledge or rest 80. for the lower edge of the tool. The ledge '79, of each of the holders 78, is provided with one or more vertical openings 81, to receive set screws 82. used for adj ustably holding a plate 83, against the upper edge of the tool 28. which plate is provided with a vertical slot 81, to receive a screw 85, which is seated in an opening 86, in the holder. Each of the holders 78, is provided with a rearward extension 87, which is formed with an arcuate slot 88. to receive a screw or bolt 89, passed through suitable transverse openings 90, in the upward extensions 91, with which each of the upright members 71, is provided at their rear parts.

It will be understood that when the members 7%, are in position on the bed-plate one of the recesses 75, will engage one side of the slot 32, of the bed-plate and the other recess 75, will engage the other side of said slot, thus leaving the extensions 91, at a sufficient distance apart to receive therebetween the rearward extension 87, on the tool-holder TS. and that as the extension 87, is secured to the extensions 91. by means of the bolt 89, which is extended through the openings 90. and slot 88. the holder TS. can be adjusted so as to give its face or front portion any desired inclination, and by tightening one of the screws 9-2, and loosening the other the tool 28, will be suitably adjusted on the ledge or rest 80, the upper surface of which is preferably curved as shown in Figs. 3, and 10, of the drawings. One of the members 7st, of one of the tool holder brackets, is provided on its lower portion with an extension 92. which has a screwthreaded opening 93, to receive and engage a screw-rod 9-1, which is journaled in suitable bearings 95, on each end of the front part of the bedplate. and has on one of its ends a crank handle 96. to turn the same. By this arrangement it is apparent that by turning the rod 94, in the proper direction. the tool holding bracket which engages said rod will be advanced or retracted on the bed-plate or in other words. will be suitably adjusted with respect to the other tool holding bracket, which may be fixed on the bed-plate or ad justed thereon by hand.

In Figs. 13. and 11. of the drawings is shown a modification in the construction of the tool holder. as well as in the construction of the bracket therefor. which consists in employing a bracket consisting of an upright piece 97, having in its upper portion a horizontally disposed opening in which the tool holder 98, is located, which holder con- 1n the front portion of the bedpla.te. Each sists of a rod having one of its ends split to receive the tool 28 which is held in place by means of a set screw 99, seated in the holder on one side of the slot therein. One end of the holder 98, is formed angular as at 100, to engage a wrench or other instrument by means of which the holder may be turned so as to give the tool the proper inclination, in which position the holder will be held by means of a set screw 101, located in one side of the upper portion of the bracket. he lower portion of the bracket 97, is reduced as at 102, to fit in the slot 32, of the bed-plate and has secured on its lower end, by means of a set screw 103. a plate 10st, which maybe turned transversally of the slot when it is desired to secure the bracket in position on the bed-plate.

From the foregoing. and by reference to the drawings, it will be readily understood and clearly seen that by placing a piece of leather on the bed-plate between the guides 2%. with one of its ends under the presserroller 51, and flange 1 1, of the gage-bar, it may be caused to approach the rear or cutting ends of the tools 28, which ends may be of such shape as to give the desired form to the edges of the leather, and said tools may be adjusted in their respective holders to the proper inclination so as to furnish the leather strip with one or more beveled edges. As the piece of leather is forced between the tools 28. which may be done by turning the roller 30, through the instrumentality of a crank-lnindle 105, thereon, it is apparent that its front end will be interposed between the draw-feed rollers 58. and 63, when by turning the crank 73. on one side of said rollers, the piece will be drawn forwardly between the tools. thus allowing them to act on the entire strip. Vhen it is desired to trim the edges of an endless belt, the gagebar 4C0. may be raised on its pivot, and the draw feed roller 63, slid outwardly which operation will permit the belt to be placed in position between the upturned ends 27, of the guides 24, as well as between the tools 28, when by lowering the gage-bar 10, which carries the presserroller 51, and by replacing the roller 63, to its normal position, it is apparent that the belt will be clamped both by the force feed rollers 51. and 30, and the draw feed rollers 58, and 63. when by turning the latter roller it is evident that the belt will be forced forwardly between the tools and both sides thereof trimmed.

By reference to Fig. 8, it will be seen thatwhen it is desired to cut the leather piece into strips, one of the tool holders 78, may be placed with its face in a vertical line, while the other one may have its face in an inclined position, so that when its tool cuts the leather, a beveled edge will be thiirnished to the strip, as well as to the main piece of leather. y turning; this piece of leather over to the position shown by dotted lines in Fig. 8, it is apparent that when another strip is cut theretron'i. both. of its edges will be beveled, thus forming what is known in the trade as a J-shaped strip, which is largely used in the manufacture of small endless belts.

Haring thus li'ully described my invention what- I claim as new and desire to secure by lietters-l atent is- 1. In a machine of the character described. the combination with a suitably supported bed-plate, of a pair of tool holders transrersally mounted thereon with their "aces in o 'iposed relation, means to adjust one o'l said tool holders. a tool secured on the face ol each of said holders, a screw shaft vertically journaled at each end of the bed-plate rearwardly ot' the tool-holders, means to turn said shatts, a recessed block mounted on. each of said shafts and in screwene'agement therewith, a bar pivotally se= cured at one of its ends within the recess of one of said blocks and detachaljdy held at its other end in the recess of said other block, a ln'ackct on the rear portion of said bar near each of its ends, a spring-actuated roller journaled in said brackets, a force tt'ced roller journaled on the bed-plate below the first named roller, and means on one of said rollers to turn the same.

In a machine of the character described, the combination with a suitably supported lud-plate, of a pair oiti tool holders trausrersally mounted thereon with their .t'aces in opposed relation, means to adjust one or said tool holders with respect to the other, a tool adjustably secured on the face of each of said holders, a screw shaft vertically journaled at each end of the bed plate rearwardly of the tool holders, means to turn saidshat'ts, a recessed. block mounted on each of said shafts and in screw engagement therewith, a bar pirotally secured at one of its ends to one of said blocks and detachably connected at its other end to the other of said blocks, a bracket on the rear portion of said bar near each of its ends, a spring adjusted roller journaled in said brackets, a force li'cedv roller journaled on the bed-plate below the first named roller, means on one of said rollers to turn the same, a pair of draw teed rollers journaled one aboye the other in front ol the tools, means to adjustably hold the upper one of the draw feed rollers, and means to turn the same.

3. Li a machine of the character described, the combination of a suitably supported. bedplate, with a pair of angularly adjustable tool holders mounted thereon with their faces in opposed relation, means to adjust one of said tool holders with respect to the other, a tool secured on the face or each of said holders, means to hold the strip of material. on the bed-plate, and means to cause the strip of material to be passed between the tools.

l. ln a machine of the character described, the combination with suitably supported bed-plate, of a pair of tool holders mounted thereon with their faces in opposed relation, means to adjust one of said tool holders angularly and with respect to the other, a tool adj ustably secured on the face of each cl said holders, a pair of guides adjustably and transrersally mounted on the bed-plate. and a pair of force feed rollers journaled longitudinally on the bed-plate at the rear of ti tools to force the strip oft material ag'a the tools.

5. in a machine of the cha 'actcr described, the combination of suitably supported bedplate. with a pair ol adjustable tool holders mounted thereommcans to adjust one of said tool holders augularly and with respect to the other, a tool secured on the face of each of said holders andt 'ansrersally with respect to the bed-plate, a pair of guides adjustably and transrersally secured on the bed-plate, a pair of force feed rollers journaled longitudinally on the bed plate at the rear of the tools, and a pair of draw feed rollers journaled longitudinally on the bed-plate at the trout. end of the tools.

ti. in a machine of the character described, the (-(nnbination with a. suitably supported bed-plate, ot' a pair of adjustable tool holding' brackets mounted on the front part of the bed-plate, means to adjust one of said brackets with respect to the other, a tool holder adjustably mounted on each of said brackets, a tool adjustably secured on each of said holders and transversally with respect to the bed-plate, a pair of guides adjustably and transversally secured on the bed-plate, a pair of force feed rollers journaled longitudinally on the bed-plate at the rear oi. the tools, a gage-bar pirotally secured at one of its ends on the bed-plate at the. rear of the tools, and a pair of draw teed rollersjournaled longitudinally on the bed-plate at the front end of the tools.

PETER STEIN.

Witnesses Crms. G. TILLMAN, d. E. Hansen. 

